This is a short and sweet diary. A new add-on for Firefox, called DeSopa, was released this week. It's a small addition to Firefox. According to the Mozilla website:
IV. HOW IT WORKS:
When turned on, DeSopa intercepts URLs, sends the base URL to three offshore DNS services via HTTP, makes a best effort to check that two of them are equivalent, caches the IP for the browser session, redirects to the equivalent URL using the IP, and substitutes out the domain name in the source code with the IP address for future requests.
You can get it here:
To put this in plain language, when you type in a web address such as dailykos.com, SOPA proposes to block you from using the DNS services in the USA, and route you to a government website or somewhere other than where you wanted to go. In short, it legalizes censorship of the web for US citizens and is probably in violation of the first amendment, but that is a discussion for another time.
However, this add-on to your Firefox browser will automatically use DNS services in countries that do not censor their citizens, so under the hood it will route you to the website you wanted to go to.